Circuit board and display apparatus

Patent metadata

Field	Value
Publication number	US-10031388-B2
Application number	US-201315036346-A
Country	US
Kind code	B2
Filing date	Nov 14, 2013
Priority date	Nov 14, 2013
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

Provided are a circuit board and a display apparatus in which, when a worker restores a cut wiring with laser, the worker may easily determine a portion to be irradiated with laser by the naked eye.
In a circuit board including multiple layered wiring parts (G, O) and an insulating part deposited between layers of the wiring parts (G, O), the insulating portion has a missing part (F) at a superposed position where the wiring parts are superposed onto each other in a layered direction, and a marker (P) indicating the presence of the missing part (F) is formed.

First claim

What is claimed is:

1. A circuit board comprising a substrate, a first wiring formed on the substrate, an insulating part formed to cover the first wiring, and a second wiring formed on the insulating part and superposed via the insulating part onto the first wiring in a predetermined superposition region, wherein
the insulating part has a multilayer structure including a plurality of insulating layers,
in the superposition region, the insulating part has a missing part where one insulating layer of the plurality of insulating layers only exists and the other is missing, and
a convex part or a concave part indicating a range of the missing part is formed at an edge of at least either of the first wiring and the second wiring.

2. The circuit board according to claim 1 , wherein
the convex part or the concave part indicating the range of the missing part is a convex part or a concave part which extends from a position corresponding to one end of the missing part to a position corresponding to another end of the missing part.

3. The circuit board according to claim 1 , wherein
the convex part or the concave part indicating the range of the missing part includes a convex part or a concave part formed at a position corresponding to one end of the missing part and a convex part or a concave part formed at a position corresponding to another end of the missing part.

4. A display apparatus, comprising:
the circuit board according to claim 1 ; and
a display unit at which an image is displayed based on a signal input through the wiring parts of the circuit board.

5. The circuit board according to claim 1 , wherein
the convex part or the concave part is formed at the edge of the second wiring, the convex part or the concave part indicating the range of the missing part with respect to a direction in which the first wiring extends.

6. The circuit board according to claim 1 , wherein
the convex part formed at the edge of one of the first wiring and the second wiring is not superposed on the other of the first wiring and the second wiring.

Assignees

• Sakai Display Products Corp

Inventors

• Nakagawa Hidetoshi

Classifications

• H05K2201/09009

  Substrate related · CPC title

• H05K3/22

  Secondary treatment of printed circuits {(H05K3/1283 takes precedence; embedding circuits in grooves by pressure H05K3/107)} · CPC title

• H05K1/0266

  Marks, test patterns or identification means · CPC title

• H05K1/0269

  for visual or optical inspection · CPC title

• H05K1/0296

  Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295 (H05K1/11 takes precedence; lay-out adapted to mounted component configuration H05K1/18) · CPC title